opal AT lists.psi.ch
Subject: The OPAL Discussion Forum
List archive
- From: Van de Walle Jarno <jarno.van.de.walle AT sckcen.be>
- To: "Adelmann Andreas (PSI)" <andreas.adelmann AT psi.ch>
- Cc: "opal AT lists.psi.ch" <opal AT lists.psi.ch>
- Subject: RE: [Opal] beamline simulation for low energy radioactive ion beams
- Date: Wed, 6 Apr 2022 11:34:33 +0000
- Accept-language: en-US, nl-BE
- Arc-authentication-results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 193.190.140.222) smtp.rcpttodomain=psi.ch smtp.mailfrom=sckcen.be; dmarc=bestguesspass action=none header.from=sckcen.be; dkim=none (message not signed); arc=none
- Arc-message-signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=eIJMHZxIb3vd/jWnhr94rhweI3xCwrk8v1D62nluIv0=; b=ceOJL5PFOAmtQsg9BmMHayfBTCo7dUN0Ba5hLyyAwE5/CoEuh0CrytxqUa1tTLrc0QTpCLTBg/ra3wLNXGo/94e+3E5fZ7URDd+4i8bkjRrBbWyzoneAA1ABZfyYPoAaN7zTMU/wCpVmes9/B7I2EkhUp19IslPNy8WpUgSWfjaisCjJXdOEJyV4d2sdXprDgD9/pXONe0ay0F8tCtIxQcuTu9tZXcpC3A6RDQP7pM944zjFjPgvrQ1YSkHSoWBHSplK17PICHuCe4iFq3J1jLJ4ltsDcf3rTQVGhng7XzgkLbqoSSVzz7Em+gww+W5zHMpuJE6xTOyGLFwTQQ6umA==
- Arc-seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=PBykcF3By8z7ihN9Oo+GlOxhaMbK0J5Wxk7Fz3coKm8svcOS/JZ5F0EH2rSCE3Pm1IMydI+b+hAjWml1hFBrtAVD2by3nwDvs/A6xh7pUvffx0flYr/7UftXPe6aHY3jXPvBO6RlZ/lk+p3u6Qyfpdxm7WZLcTy3jxXxPwsOmyuy47NLooa4aVXW29pfmaBs7O1wlhS6LvMdZTkTtrRa10K2lSKtxyN6DDanrh7e1Ea1qBOLnwfvI2E/Y6REewRpmnEJjMan0DTaDsTwgmKrNvoz2zbovH5jwxn8SnW+p7p9GljygjTp9728PHrRQw23UDHEwKD2hJrT5/2z2wZ6Tw==
Hello Andreas,
Thanks for your quick reply!
There seems indeed some misinterpretation of restmass and kinetic or total energy …
The restmass for an ion of mass 100 (say, for ease we consider Sn-100) is than 100*amu = 93149.41 MeV The kinetic energy is only 0.06 MeV Total energy follows naturally. Gamma = 1.0000006441 B.rho = 0.352663 T.m These values are correct in the input file.
So in the ‘BEAM’ statement I : - omit the PARICLE definition (since it’s none of the predefined symbolic constants). When running OPAL notifies it’s assigning ‘UNNAMED’ - MASS = rest mass, correct ? Not total mass ? - CHARGE = 1+ - BEAM ENERGY I specify as GAMMA (since it has highest priority, as read from paragraph 14.1 in the manual) - BFREQ I assigned according to your suggestion (although we have a continuous beam here, but I suppose this doesn’t really affect the tracking ?) - BCURRENT = 1e-6
When running like this, I get:
=> Momentum is zero ?
And weird Ekin and dEkin definitions in “BUNCH” output
Can the code really be used for none predefined particles, like I try to do here ?
Many thanks in advance for any further assistance! With kind regards Jarno
From: Adelmann Andreas (PSI) <andreas.adelmann AT psi.ch>
Hi Jarno you need to define the charge for example
REAL f1 = 50.65; // MHz
"RIB": BEAM, MASS=E0*1e-3, charge=1.0, ENERGY=E_TOT*1e-3, npart=10.0, BCURRENT=1.0E-6, BFREQ= f1;
Still, something seams to be off with the rest-mass. Consider to check by printing some values like:
value, {sr_gamma, E0}; STOP;
Otherwise I will look at this again.
Cheers Andy ------ Zoom Link:
https://ethz.zoom.us/j/4705824086?pwd=dFcvT1pMMGY0bHg0dTNncUNZZTJkZz09
|
-
[Opal] beamline simulation for low energy radioactive ion beams,
Van de Walle Jarno, 04/05/2022
-
Re: [Opal] beamline simulation for low energy radioactive ion beams,
Adelmann Andreas (PSI), 04/06/2022
-
RE: [Opal] beamline simulation for low energy radioactive ion beams,
Van de Walle Jarno, 04/06/2022
-
Re: [Opal] beamline simulation for low energy radioactive ion beams,
Chris Hall, 04/06/2022
- RE: [Opal] beamline simulation for low energy radioactive ion beams, Van de Walle Jarno, 04/07/2022
-
Re: [Opal] beamline simulation for low energy radioactive ion beams,
Chris Hall, 04/06/2022
-
RE: [Opal] beamline simulation for low energy radioactive ion beams,
Van de Walle Jarno, 04/06/2022
-
Re: [Opal] beamline simulation for low energy radioactive ion beams,
Adelmann Andreas (PSI), 04/06/2022
Archive powered by MHonArc 2.6.19.